Catch Up 401k Contribution 2024. 2024 irs 401k limit after tax. The 2024 tsp contribution limit for the will increase by $500 from $22,500 in 2023 to $23,000 next year according to mercer, a financial services consulting firm.
The total annual contribution limit for all 401 (k). 401k catch up contributions for simple 401k plans: